Change of my date of birth in ssc memo

In which year you cleared SSC?

If your date of birth was 7.2.1981, how it was entered as 15.4.1974 in school records?  When did you come to know this?  What proof you have to say that your date of birth is 7.2.1981?

Are you employed now?

what you loosed 2 years? 1981-1974 = ? 2 years First answer the points raised by Sri Ramachandran, What are the other proof you have regarding your birth year is 1980?

You have simply answered that -

Sorry sir tenth memo in 15.04.1979. My date of birth proof is only my parents marriage wedding card. They married on 23.04.1979

But you have not answered as to when did you come to know about this mistake?

Whether you are employed now? 

Dont try to act smart by answering in bits and pieces and not answering other queries.

Also answer in this thread only, instead of opening new threads.